Question
PSLE
Natalie had a bottle of detergent. She used an equal amount of detergent each day. At the end of the 12th day, 13 of the bottle was left. At the end of the 16th day, the amount of detergent left was 300 mℓ. What was the amount of detergent in the bottle at first? Express your answer in mℓ.
2 m

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PSLE
Natalie had a bottle of detergent. She used an equal amount of detergent each day. At the end of the 12th day, 13 of the bottle was left. At the end of the 16th day, the amount of detergent left was 300 mℓ. What was the amount of detergent in the bottle at first? Express your answer in mℓ.